Abstract: | This research project is focused on theoretical and empirical works analyzing the effects of career counseling. This experimental and longitudinal study has been carried out in France; it compares a sample of individuals having undertaken competence assessment with a control group and deals with self‐esteem, self‐analysis, self‐concept, and the participants' situations. The results correspond to the authors' main hypotheses: The effect size calculated for all the variables (+0.62) is similar to the one observed in the meta‐analyses concerning the same topic. The stability of effects has also been demonstrated for 2 out of 3 categories of variables (effect size +0.44) in spite of a slight decrease in the production of self‐concept. Finally, treatment intensity seems to have a lesser effect than the one expected, but it strengthens its role in the development of self‐analysis. The discussion focuses on the prospects for counseling practice assessment, as well as theoretical directions meriting future development. |